* cpu-epiphany.c: Reinstate full list of Copyright years.
        * elf32-epiphany.c: Likewise.
cpu:
        * epiphany.cpu, epiphany.opc: Likewise.
gas:
        * config/tc-epiphany.c, config/tc-epiphany.h: Likewise.
        * doc/c-epiphany.texi: Likewise.
include:
        * elf/epiphany.h: Likewise.